Thanks Ross for the information.
Mikael

"Ross Reid" wrote in message
...
Your apple, pear and hickory will not pollinate either the chestnut or
pecan trees.
Pecan trees are monoecious, that is, the male (catkin) and female
flowers are borne separately at different locations on the same tree.
However, the ripening of male and female flowers on a single tree has
very little, if any, overlap. If your pecan tree has female flowers
that ripen early you will need to obtain a different cultivar that has
early ripening male flowers to obtain cross-pollination.
Chinese chestnut is basically the same.
Both are wind pollinated.
Good luck.
Ross.
To email, remove the "obvious" from my address.